Roller and roller-retarding device for log-chutes.



R. J. HAMILTON. ROLLER AND ROLLER RETARDING DEVICE FOR LOG CHUTES.APPLICATION FILED NOV. I9. I915.

1,210,065. Patentd Dec. 26,1916.

ROBERT J. HAMILTON, OFVE NAVILLE, IDAHO.

ROLLER AND BQLLER-RETARDING DEVICE ronnoe-onurns.

T) aZZ whom it may concern Be it known that I, ROBERT J. ,HaM LroN, acitizen of the United States, lQSldlIlg, at

Enaville, in the county of Shoshone and. State of Idaho, have lnventedcertain new and useful Improvements in Rollers and Roller-RetardingDevices :for Log-Chutes; and Ido hereby declare the following to be afull, clear and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in log chutes and has foritsprimary object the provision of horizontal portlons of chutesof thischaracter, with spaced rollers to facilitate the handlingoflogs oversuch portions. i I

' A further object of the invention is the movision of means adapted tocontrol the speed of travel of logs on downwardly inclined portions ofthe chute, said means comprising a roller extending across the chute androtated by thelogs, and means adapted to retard the rotation of therollers. A still further object of'the invention is the provision of adouble cone-shaped roller provided with studs on the periphery ther ofadapted to engageand bite into the logs while passing over the roller.

A still further object of this invention is a retarding devicecomprising a cylinder hingedly secured to the chute having a pressurerelief mounted thereon and a piston slidably mounted in said cylinderand adapted to be eccentrically connected to the shaft for retarding themovement of the logs over the incline of the chute.

A still further object of this invention is the provision of the deviceof the character described, which is of few parts, and can be easily andquickly manufactured and sold at a comparatively low cost, wherein it isdescribed, claimed, and illustrated in the accompanying drawing, inwhich:

Figure 1 is a top plan View of this invention illustrating theapplication of it to a log chute. Fig. '2 is a side elevationillustrating the retarding mechanism, partlyv in section. taken on theline 33 of Fig. 1, illustrating in dotted lines the cutaway board of thelog chute in respect to the height of the cylinder, and Fig. 4: is asectional view of a portion of the cylinder illustrating an airregulating screw.

Fig. 3 is a sectional end view' Specification of Letters Patent.Patented Dec, 26 1916, Application filed ovember-19,1915.- Serial No.62,355. a

ties, '2 the outer boards and- 3the inner boards which are provided withtheir upper faces inclined downwardly and in wardly and that go to.construct a log chute of the well known :type. And, in applying thisinvention the intermediate boards are cut away forming a space, to;receive the rollers which will be hereinafter described.

Secured by suitable means to the outer boards 2, adjacent the opening ofthe intermediate boards arebearings 4:. IA shaft 5 extendingtransversely of the opening of the chute and journaled within thebearings 4 is provided with a fly wheel 6 mounted on one end thereof; Adouble cone-shaped vided with a plurality-of studs 8 on the-pe ripherythereof adapted to engage and bite into thelogs as they pass thereover.The upper side of the roller extends in a plane above the upper face ofthe boards '2 to form a retarding means when engaged by a log.

A retarding device consisting of a cylinder 9 hingedly secured as at 10,to one of the ties l and provided with a piston 10 reciproroller 7ismounted on the shaft 5 and pro I cably mounted therein, which is in turnpivotally connected to a pin 11 formed extensively of the fly wheel 6.An internally screw threadedboard 12 formed on the cylinder 9 at thebottom thereon, and adapted to receive a regulating screw 13, which isprovided with a squared head 14. Formed on the screw13 is a slot 15extending from the inner end to .a point midwayof the length of thescrew, 13 providing means for Eegulating the pressure within the cyliner9. I

It will be seen from the foregoing description that a device has beenprovided capable of retarding the speed of logs as they travel along theinclined portions of the log chute,wherein the logs will engage thedouble cone-shaped roller 7 and will rotate said roller in the directionof the travel of the logs; The suddenness in which the logs engage theroller 7 is met by the resistance of the pressure of air within thecylinder. 9 against the piston 10 and will allow the roller 7 to rotatein the direction of the movement of the log according to the pressure ofair from the cylinder 9 through the slot 15 of the regulating screw 13,which was previously drawn in on the upstroke of the piston 10, thusretarding the speed of the movement of the log down the inclinedportions of the chute according to the pressure or resistance occurringin the cylinder 9. The pressure or resistance may be regulated in thecylinder 9 as desired by screwing the regulating screw 13 in and out ofthe cylinder 9 by a suitable tool.

When it is desired toeinploy thisinvention on the horizontal portion ofthe log chute, the regulating screw 13 is removed from the cylinder 9doing away with the pressure within the cylinder 9 and providing adevice capable of being used as a roller to overcome the frictionoccurring between the log and the chute when it is necessary to haul thelogs over such portions of the chute.

Having thus described my invention, what I claim is 1. In combination, alog chute having cross ties, outer boards and inner boards provided witha cut-away portion to form an opening, of a transversely extending shaftj ournaled to the outer boards and extending across the opening, adouble cone shaped roller secured to the shaft within the opening, a flywheel secured to one end of the shaft, a cylinder pivoted to one of theties, a piston slidable within said cylinder and eccentrically connectedto the fly wheel, said cylinder provided with an internallyscrew-threaded opening adjacent its pivoted end, and a bolt threaded insaid opening of the cylinder and provided with a slot from the inner endto a point midway of the length thereof to provide means for reducingand increasing the pressure within the cylinder as desired.

2. In combination, a log chute comprising slide boards having theiradjacent ends relatively spaced, a roller journaled between.

said spaced ends and extending transversely of said boards, the upperside of the roller 7 of said boards and means for retarding the speed ofthe rotation of the roller so that the engagement of a log with theroller will,

affect the reduction of the speed of the log.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT J. HAMILTON. Witnesses:

CHAS. H. Nrnson, LYCURGUS L. LEIGHTY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

